If you are using the launchClient command
to run a managed or unmanaged client that uses a JMS-style endpoint URL, the urlprotocols.jar file
that contains the custom protocol handler for the JMS protocol must be in
the CLASSPATH. The malformed URL exception can be avoided by making sure the urlprotocols.jar file
is in the CLASSPATH.

To add the urlprotocols.jar file to the
CLASSPATH...

On Windows platforms, edit the $WAS_HOME\bin\setupCmdLine.bat and
locate the line which sets the WAS_CLASSPATH environment variable.
Add %$WAS_HOME%\lib\urlprotocols.jar to the end of the
line that sets the WAS_CLASSPATH environment variable.

On UNIX
platforms, edit the $WAS_HOME/bin/setupCmdLine.sh file
and add $$WAS_HOME/lib/urlprotocols.jar to the end of the
line that sets the WAS_CLASSPATH environment variable.